verb
ADVERB
▪ partially
▪ completely
▪ deliberately ( esp. BrE ), wilfully ( BrE , law )
▪
wilfully ~ing a police officer in the execution of his duty
PREPOSITION
▪ in
Obstruct is used with these nouns as the object: ↑ highway , ↑ investigation , ↑ justice , ↑ passage , ↑ path , ↑ progress , ↑ traffic , ↑ view